{
  "schema_version": "1.4.0",
  "id": "GHSA-cf3q-gqg7-3fm9",
  "modified": "2025-03-21T15:43:00Z",
  "published": "2025-03-21T15:23:50Z",
  "aliases": [
    "CVE-2025-30157"
  ],
  "summary": "Envoy crashes when HTTP ext_proc processes local replies",
  "details": "### Summary\nEnvoy's ext_proc HTTP filter is at risk of crashing if a local reply is sent to the external server due to the filter's life time issue. A known situation is the fail of a websocket handshake will trigger a local reply leading to the crash of Envoy.\n\n### PoC\nIf both websocket and ext_proc are enabled, a failed handshake will trigger a local reply, thus ext_proc will crash.\n\n### Mitigation\n1. Disable websocket traffic\n2. Change the websocket response from backend to always return `101 Switch protocol` based on RFC.\n3. Apply the patch and the ext_proc filter will not send the local reply that is generated by Envoy to the ext_proc server for processing.\n4. Apply the patch that the router will cancel the upstream requests when sending a local reply.\n\n### Impact\nDenial of service\n\n### Reporter\nVasilios Syrakis\nFernando Cainelli",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/envoyproxy/envoy"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.30.10"
            }
          ]
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/envoyproxy/envoy"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "1.31.0"
            },
            {
              "fixed": "1.31.6"
            }
          ]
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/envoyproxy/envoy"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "1.32.0"
            },
            {
              "fixed": "1.32.4"
            }
          ]
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/envoyproxy/envoy"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "1.33.0"
            },
            {
              "fixed": "1.33.1"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-cf3q-gqg7-3fm9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-30157"
    },
    {
      "type": "WEB",
      "url": "https://github.com/envoyproxy/envoy/commit/8eda1b8ef5ba8663d16a737ab99458c039a9b53c"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/envoyproxy/envoy"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-460"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2025-03-21T15:23:50Z",
    "nvd_published_at": "2025-03-21T15:15:43Z"
  }
}